v3.26.1
Material accounting policies and use of significant judgements and estimates - Narrative (Details)
$ in Thousands
 12 Months Ended
Dec. 31, 2025
USD ($)
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Jun. 23, 2022
tranche
Disclosure of voluntary change in accounting policy [line items]        
Revenue growth rate assumption used in estimating recoverable amount of cash-generating unit 309.00%      
Government grants receivable $ 2,102 $ 8,477    
Income from government grants 4,562 $ 1,775    
Benefits paid or payable $ 5,503      
Percent share of benefits paid or payable 0.0034 0.0034 0.0032  
Number of active policyholders, percentage 0.0008 0.0008 0.0008  
Surplus of consolidation level, percentage 1.67 1.63 1.58  
Recoverable amount of asset or cash-generating unit     $ 696,950  
Intangible assets and goodwill $ 700,326 $ 1,040,849 [1]    
Cash and bank balances 1,150,436      
Time deposits 8,863      
Polestar Automotive Holding Limited ("Former Parent")        
Disclosure of voluntary change in accounting policy [line items]        
Number of tranches | tranche       5
Polestar 2        
Disclosure of voluntary change in accounting policy [line items]        
Impairment loss 40,766      
Recoverable amount of asset or cash-generating unit $ 210,354      
Discount rate applied to cash flow projections 14.60%      
Polestar3        
Disclosure of voluntary change in accounting policy [line items]        
Impairment loss $ 891,054      
Recoverable amount of asset or cash-generating unit $ 189,716      
Discount rate applied to cash flow projections 14.60%      
Internal Development Projects        
Disclosure of voluntary change in accounting policy [line items]        
Impairment loss $ 167,078      
Recoverable amount of asset or cash-generating unit $ 92,735      
Discount rate applied to cash flow projections 14.50%      
Total for all individual assets or cash-generating units        
Disclosure of voluntary change in accounting policy [line items]        
Impairment loss     $ 339,568  
Goodwill        
Disclosure of voluntary change in accounting policy [line items]        
Intangible assets and goodwill $ 52,386 $ 43,793    
2026-2030 Business Plan        
Disclosure of voluntary change in accounting policy [line items]        
Growth rate used to extrapolate cash flow projections 14.50% 15.50%    
2024-2028 Business Plan        
Disclosure of voluntary change in accounting policy [line items]        
Growth rate used to extrapolate cash flow projections     15.50%  
2025-2029 Business Plan        
Disclosure of voluntary change in accounting policy [line items]        
Growth rate used to extrapolate cash flow projections   15.50%    
2025-2029 Business Plan | Polestar 3 CGU        
Disclosure of voluntary change in accounting policy [line items]        
Adjustments for impairment loss recoverable amount   $ 635,226    
Adjustments for impairment loss   205,789    
2025-2029 Business Plan | Internal development project CGU        
Disclosure of voluntary change in accounting policy [line items]        
Adjustments for impairment loss recoverable amount   19,328    
Adjustments for impairment loss   $ 416,303    
Minimum        
Disclosure of voluntary change in accounting policy [line items]        
Collective funding ratio 1.25      
Maximum        
Disclosure of voluntary change in accounting policy [line items]        
Collective funding ratio 1.75      
[1] Certain figures and descriptions were re-presented (see Voluntary re-presentation from previous year in Note 2 - Material accounting policies and use of significant judgements and estimates).